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Dishwasher Won't Fill - Appliance tip of the week

The part(s) or condition(s) listed below for the symptom Dishwasher won't fill are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.

The water inlet valve opens to allow water to enter the dishwasher. If the water valve is clogged or defective, water will not flow into the dishwasher. Water inlet valves are not repairable—if the valve is defective, you must replace it.

The float switch actuates in order to prevent the dishwasher from overflowing. If the float switch is defective or stuck, it might not stop the dishwasher from overflowing. If the float switch is defective, replace it.

Over time, calcium deposits can build up in the water supply valve or in the small filter screen inside the water inlet valve. If the water inlet valve is clogged with sediments, the dishwasher won’t fill properly. Before working on the water line, first shut off the water supply. Inspect the valve to determine if is clogged. In addition, check the water pressure to the valve. The water inlet valve requires at least 20 psi to function properly.